Amsn won't start. It initialization script fails.

Binary package hint: amsn

When executed from graphic shortcuts, it only fails, it doesn't displays error messsages. but from terminal, this is seen:
===Begin===

Error in startup script: extra characters after close-brace
    while executing
"set command [list $self {expand}$Snit_optionInfo(configure-$option) $option]
            "
    invoked from within
"if {$Snit_optionInfo(configure-$option) eq ""} {
                set command [list set ${selfns}::options($option)]
            } else {
             ..."
    (procedure "snit::RT.CacheConfigureCommand" line 32)
    invoked from within
"snit::RT.CacheConfigureCommand $type $selfns $win $self $option"
    (procedure "::snit::RT.method.configurelist" line 7)
    invoked from within
"::snit::RT.method.configurelist $type $selfns $win $self $args"
    (procedure "::snit::RT.method.configure" line 4)
    invoked from within
"$self configure -width $arrow1width"
    (procedure "::pixmapscrollbar::Snit_constructor" line 52)
    invoked from within
"::pixmapscrollbar::Snit_constructor ::pixmapscrollbar ::pixmapscrollbar::Snit_inst1 .plugins_log.ys .plugins_log.ys -command {.plugins_log.info yview}"
    ("eval" body line 1)
    invoked from within
"eval [linsert $arglist 0 ${type}::Snit_constructor $type $selfns $instance $instance]"
    (procedure "RT.ConstructInstance" line 9)
    invoked from within
"RT.ConstructInstance $type $selfns $name $args"
    (procedure "::snit::RT.widget.typemethod.create" line 54)
    invoked from within
"scrollbar $window.ys -command "$window.info yview""
    (procedure "::pluginslog::draw" line 12)
    invoked from within
"::pluginslog::draw"
    invoked from within
"if { $initialize_amsn == 1 } {
     ::pluginslog::draw
}"
    (file "pluginslog.tcl" line 210)
    invoked from within
"source pluginslog.tcl"
    ("uplevel" body line 27)
    invoked from within
"uplevel \#0 {

        # amsncore.tcl is already loaded but we'll re-source it here in case we manually do reload_files
        source amsncore.tcl
        source audio.tc..."
    (procedure "reload_files" line 2)
    invoked from within
"reload_files"
    (file "/usr/bin/amsn" line 257)

==== End===

System: Ubuntu Gutsy up2date.
PATH: /home/isaquealves/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
AMSN Version: 0.97-final with tcl/tk8.5

other available info:
I've made some tricks trying to fix this error:
* created sym links to wish8.5 and tclsh8.5, substituting links to /etc/alternatives/tclsh and wish.
* tried to use the autopackage version.

None of these works fine.